Etymologies

Spanish, from Old Spanish adobar, to stew, from Old French adouber, to dub, arm, prepare, of Germanic origin.

(American Heritage® Dictionary of the English Language, Fourth Edition)

From Spanish. (Wiktionary)

Examples

When Spanish colonizers first took administration over the Philippines in the late 1500s and early 1600s, they encountered an indigenous cooking process which involved stewing with vinegar, which they then referred to as "adobo," which is the Spanish word for seasoning or marinade.

Another quick chipotle recipe: Stir a tablespoon or so of minced chipotle chillies in adobo sauce into 1 cup thick yogurt (low-fat yogurt placed in a strainer/cheesecloth for a couple of hours to allow the whey to drain out).